* {
  margin: 0;
  padding: 0;
  font-weight: bold;
  box-sizing: border-box;
}

.mask {
  width: 100%;
  height: 100%;
  position: fixed;
  left: 0;
  top: 0;
  background: rgba(0, 0, 0, 0.3);
}

.content {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #fff;
  padding: 20px;
  width: 300px;
  height: 150px;
  padding: 20px;
  text-align: center;
  border-radius: 25px;
}

.content button{
    margin: 20px 10px;
    width:80px;
    height:36px;
}
